Improvement in gas-burners



UNITED STATES PATENT OEEIoE.

EDWIN EVANS, OF LYNN, MASSACHUSETTS.

IMPROVEMENT IN GAS-BURNERS.

Specification forming part of Letters Patent No. 160.758, dated March16, 1875; application filed July 7, 1874.

To all whom it may concern:

Be it known that I, Enwnv EVANS, of Lynn, of the county of Essex andState of Massachusetts, have invented a new and useful Improvement inGas-Burners; and do hereby declare the same to be fully described in thefollowing specification and represented in the accompanying drawings, ofwhich- Figure 1 denotes a side elevation, and Fig. 2 a vertical andtransverse section, of one of m y improved burners. Fig. 3 is a sideview, and Fig. 4 a vertical section, of its hollow and slotted cap orhead and the bellshaped base thereof.

The burner-case A is composed of two hollow bell-shaped portions, to 1),arranged as shown, and united at their bases. Extending upward withinthe case from its bottom is an induct, B, which, screwed into the case,eX- tends, at its upper end, through a cone-avoconvex strainer, 0,provided with an encompassing flange, 0. Upon the said flange c asimilar flange, d, of an unperforated dome or deflector, D, is placed.Holes f f are made through the strainer, and also through the twoflanges c (1, their holes being shown at c e, the series of which is toextend around the flanges. The composition or mineral tip of the burner(seen at E) is titted like a cork into the mouth 9 of the upper part ofthe burner-case. It is encompassed by a hollow spherical or spheroidalhead, F, slotted crosswise, as shown at h, and provided with abell-shaped base, i, to rest upon and fit to the upper part a of theburnercase. This head or hood not only serves to modify the flame orimprove its light-giving property, but as a means of interceptingheatfrom the flame and conveying it down to the burner-case, in order toheat the gas while it may be passing through the case. The mineral tip,being a bad conductor of heat, prevents much heatfrom the flame beingabsorbed by the case. The metallic head, when used with the mineral tip,thus serves as a conductor of heat. diametrically with a hole, I, isscrewed transversely into the conduit B, above its female screw m. Thisscrew answers as a cock to regulate the flowage of gas through theconduit. By providing the stem of the cock with a screw, and screwing itinto the conduit, the stem will be prevented from accidentally fallingout of its socket, and may be turned so as to let the gas now throughthe hole 1, the passage of the gas being diminished or iiicreased by thetransverse and longitudinal movements of the cock.

I do not claim a single perforated diaphragm or hollow cone, arranged ina burner-case.

Nor do I claim a cylindrical or a conical stem,

perforated or slotted, and used as a cock for a gas-burner. I add to itthe screw, and form in the induct of the burner a female screw toreceive it, in which case the cock, while being turned, has two motions,one transversely and the other longitudinally, it being kept in place bythe screws.

The flanged deflecting-dome and the flanged strainer, and the series ofholes through the flanges, operate to excellent advantage in diffusingand checking the gas, in order to produce steadiness of the flame underthe usual variations of pressure.

In the said gas-burner, I claim as my invention as follows:

The domes G D, flanged and arranged, and having holes 6 in the twoflanges, and applied to the induct B, all as described, in combinationwith the bell b, flanged at its larger base, and with the bell a,flanged, and having its flange to clasp around the flanges of bell b,and of the domes, so as to make therewith a tight joint and connecttogether said bells and domes, all as specified and represented.

EDWIN EVANS.

Witnesses:

R. H. EDDY, J. R. SNOW.

A screw, k, perforated

